diff --git a/dfhack/python/pydfapi.py b/dfhack/python/pydfapi.py
index f4bc0d12b..76aea332c 100644
--- a/dfhack/python/pydfapi.py
+++ b/dfhack/python/pydfapi.py
@@ -3,6 +3,10 @@ from pydfhack import *
 class API(_API):
     def __init__(self, *args, **kwds):
         _API.__init__(self, args, kwds)
+        
+        self._map_mgr_type = Map
+        self._vegetation_mgr_type = Vegetation
+        self._gui_mgr_type = GUI
 
 class Map(_MapManager):
     def __init__(self, *args, **kwds):